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1201002

USP

17α-Dihydroequilin

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

α-Equilol, Estra-1,3,5(10),7-tetraene-3,17α-diol

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About This Item

Empirical Formula (Hill Notation):
C18H22O2
CAS Number:
651-55-8
Molecular Weight:
270.37
UNSPSC Code:
41116107
NACRES:
NA.24

grade

pharmaceutical primary standard

API family

equilin

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

InChI

1S/C18H22O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3-5,10,14,16-17,19-20H,2,6-9H2,1H3

InChI key

NLLMJANWPUQQTA-UHFFFAOYSA-N

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General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Application

17α-Dihydroequilin USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319

Precautionary Statements

P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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S J Foster et al.
The Journal of steroid biochemistry and molecular biology, 82(4-5), 401-411 (2003-02-19)
In on-going studies of 'classical' and ring B-unsaturated oestrogens in equine pregnancy, the products of metabolism of [2,2,4,6,6-2H(5)]-testosterone and [16,16,17-2H(3)]-5,7-androstadiene-3 beta,17 beta-diol with equine placental subcellular preparations and allantochorionic villi have been identified. Using mixtures of unlabelled and [2H]-labelled steroid
Irina Rozovsky et al.
Neuroscience letters, 323(3), 191-194 (2002-04-18)
Premarin, which contains several equine estrogens, as well as estradiol (E2) as a minor component, is widely used for replacement therapy of estrogen deficits, but little is known of its direct actions on brain cells. In mixed glial cultures, apolipoprotein
S A Washburn et al.
Brain research, 758(1-2), 241-244 (1997-05-30)
The effects of estradiol and 17alpha-dihydroequilenin on the apical dendrite spine density of pyramidal cells of the CA1 region of rat hippocampus were compared. 17alpha-Dihydroequilenin was as effective as estradiol in increasing spine densities relative to controls. 17alpha-Dihydroequilenin is not
A Chandrasekaran et al.
Journal of chromatography. B, Biomedical applications, 676(1), 69-75 (1996-02-09)
A high-performance liquid chromatographic (HPLC) method with fluorescence detection for the determination of total (unconjugated and conjugated) 17 alpha-dihydroequilenin in male and female rat, female rabbit and male and female rhesus monkey plasma is described here. Plasma sample preparation involved
Bhagu R Bhavnani et al.
Journal of the Society for Gynecologic Investigation, 9(2), 102-110 (2002-10-26)
In the present study, the constant infusion of [3H]17 beta-dihydroequilin sulfate ([3H]17 beta-EqS) was used to estimate the metabolic clearance rate (MCR) of 17 beta-dihydroequilin sulfate (17 beta-EqS) and to measure the conversion of this estrogen to equilin sulfate (EqS)
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